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A 100 ml volumetric flask with stopper Volumetric flasks of various sizes. A volumetric flask (measuring flask or graduated flask) is a piece of laboratory apparatus, a type of laboratory flask, calibrated to contain a precise volume at a certain temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions ...
The primary use of sterile water for injection is as an ingredient for dilution of other medications (aseptic preparation of parenteral solutions). [6] If it is given by injection into a vein without making it approximately isotonic, breakdown of red blood cells may occur. [3] This can then result in kidney problems. [3]
The USP is published in a combined volume with the National Formulary (a formulary) as the USP-NF. [2] If a drug ingredient or drug product has an applicable USP quality standard (in the form of a USP-NF monograph), it must conform in order to use the designation "USP" or "NF".
Typical volumes are 1, 2, 5, 10, 20, 25, 50 and 100 mL. Volumetric pipettes are commonly used in analytical chemistry to make laboratory solutions from a base stock as well as to prepare solutions for titration. ASTM standard E969 defines the standard tolerance for volumetric transfer pipettes. The tolerance depends on the size: a 0.5-mL ...
Standard solutions are generally prepared by dissolving a solute of known mass into a solvent to a precise volume, or by diluting a solution of known concentration with more solvent. [1] A standard solution ideally has a high degree of purity and is stable enough that the concentration can be accurately measured after a long shelf time. [2]
These are used as solvents or vehicles for the preparation of medicated elixirs. Active ingredients are dissolved in a 15–50% by volume solution of ethyl alcohol : aromatic elixirs ( USP )
To a known volume of sample, an excess but known amount of I-is added, which the oxidizing agent then oxidizes to I 2. I 2 dissolves in the iodide-containing solution to give triiodide ions (I 3-), which have a dark brown color. The triiodide ion solution is then titrated against standard thiosulfate solution to give iodide again using starch ...
Dense inverted sugar syrup (Trimoline) Inverted sugar syrup, also called invert syrup, invert sugar, [1] simple syrup, sugar syrup, sugar water, bar syrup, syrup USP, or sucrose inversion, is a syrup mixture of the monosaccharides glucose and fructose, that is made by hydrolytic saccharification of the disaccharide sucrose.